Spy Optics Men's Polarized Dirk Black Sunglasses

Frame Color: Black
Lens Color: Happy Gray Green Polar

Plain, simple, and badass, the Dirk looks so tough it broke the mold. Available in polarized and ANSI styles, it features SPY's detail- and mood-boosting Happy Lens™ and Trident™ polarization. The Dirk is built from virtually indestructible Grilamid® and features snap pin hinges, 8-base polycarbonate ARC® lenses and 100% UV protection.

• Available with the color and contrast enhancing Happy Lens™ and Trident™ polarization
• Constructed from Grilamid®, a lightweight frame material ideal for everyday wear due to its strength and flexibility
• 8-base polycarbonate ARC® lenses for increased optical performance
• High-quality, long-lasting snap pin hinges
• 100% UV protection reduces eye fatigue and long-term sun damage
• Frame measures 64-16-125

Fit: Large
Reference: 672052038864
Weight: 1g
Frame Color: Black
Lens Color: Happy Gray Green Polar
Available with RX: No
Style # 672052038864

Sunglasses are more than a fashion statement—they’re essential for protecting your eyes and enhancing your vision. Here’s everything you need to know about choosing the perfect pair.

1. Lens Types
a. Polarized Lenses
Best for: Reducing glare from reflective surfaces like water, snow, or roads.
Ideal for: Fishing, driving, skiing, and outdoor activities.
Pro Tip: Polarized lenses don’t show digital screens well, so they may not be ideal for pilots or those needing frequent screen use.

b. UV Protection Lenses
Best for: Blocking harmful UVA and UVB rays.
Ideal for: Everyday outdoor use to protect your eyes from long-term sun damage.
Pro Tip: Look for lenses labeled “100% UV protection.”

c. Gradient Lenses
Best for: Reducing glare from overhead light while allowing clear vision below.
Ideal for: Driving and casual wear.
Pro Tip: Choose double-gradient lenses if you need reduced glare from both top and bottom.

d. Photochromic Lenses
Best for: Adapting to changing light conditions.
Ideal for: Moving between indoor and outdoor environments.
Pro Tip: These lenses may take longer to adjust in very cold weather.

e. Mirrored Lenses
Best for: Reducing glare and providing a reflective surface for privacy.
Ideal for: Sunny outdoor environments.
Pro Tip: Perfect for high-altitude activities or snow sports.

2. Frame Styles
a. Aviator
Features: Thin metal frame with a teardrop-shaped lens.
Best for: Timeless style and full eye coverage.
Ideal Face Shapes: Oval, square, and heart.

b. Wayfarer
Features: Thick plastic frame with a classic rectangular shape.
Best for: Casual and versatile styling.
Ideal Face Shapes: Oval, round, and heart.

c. Round Frames
Features: Circular lenses with retro vibes.
Best for: A bold, vintage look.
Ideal Face Shapes: Square and oval.

d. Wraparound
Features: Curved frames that hug your face for full coverage.
Best for: Sports and outdoor activities.
Ideal Face Shapes: Oval and square.

e. Cat-Eye
Features: Flared outer edges for a feminine touch.
Best for: High-fashion looks.
Ideal Face Shapes: Oval and heart.

3. Lens Colors
a. Gray
Best for: Reducing brightness without distorting colors.
Ideal for: General outdoor activities and driving.

b. Brown/Amber
Best for: Enhancing contrast and depth perception.
Ideal for: Golf, fishing, and other sports.

c. Green
Best for: Reducing glare while preserving natural colors.
Ideal for: Daily wear and outdoor activities.

d. Yellow/Gold
Best for: Improving visibility in low-light conditions.
Ideal for: Night driving and overcast days.
e. Blue/Purple
Best for: Reducing glare and adding a trendy look.
Ideal for: Style-focused wear.

4. Types of Sunglasses
a. Fashion Sunglasses
Purpose: Style-first with less focus on performance.
Features: Wide variety of designs, colors, and materials.
Best for: Occasional wear and making a statement.

b. Sports Sunglasses
Purpose: Performance-oriented with durable materials.
Features: Anti-slip frames, impact resistance, wraparound design.
Best for: Running, cycling, hiking, and other activities.

c. Driving Sunglasses
Purpose: Enhancing visibility and reducing glare.
Features: Polarized lenses, anti-reflective coating.
Best for: Long drives and bright conditions.

d. Prescription Sunglasses
Purpose: Correcting vision while providing sun protection.
Features: Customizable lenses.
Best for: Daily wear for those needing vision correction.

e. Oversized Sunglasses
Purpose: Maximum coverage and bold style.
Features: Large lenses that cover the entire eye area.
Best for: UV protection and glamorous looks.

f. Clip-On Sunglasses
Purpose: Attachable lenses for prescription glasses.
Features: Lightweight and portable.
Best for: Convenience without needing separate sunglasses.

5. Frame Materials
a. Plastic
Features: Lightweight, affordable, versatile.
Best for: Everyday casual use.

b. Metal
Features: Durable, adjustable, sleek.
Best for: Classic styles like aviators and wireframes.

c. Nylon
Features: Lightweight, flexible, impact-resistant.
Best for: Sports and active wear.

d. Titanium
Features: Durable, lightweight, hypoallergenic.
Best for: Long-lasting, high-end sunglasses.

6. Features to Look For
Comfort: Adjustable nose pads and lightweight materials.
Durability: Scratch-resistant lenses and sturdy frames.
Fit: Snug but not tight—sunglasses should not slide off or pinch.
Coverage: Ensure lenses provide adequate protection for your eyes.

7. Maintenance Tips
Always store sunglasses in a protective case.
Clean lenses with a microfiber cloth to avoid scratches.
Avoid leaving them in extreme heat, like a car dashboard.